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UNAUTHORIZED TRANSACTION RELATED RECOVERIES (Details) - USD ($) | 12 Months Ended
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Jun. 30, 2015 | Jun. 30, 2014
Unauthorized Transactions, Costs and Related Recoveries, Net [Abstract] |  |
Legal fees incurred | $ 152,492 | $ 388,287
Proceeds from asset forfeitures | (121,465) | (1,134,082)
Unauthorized transaction related costs and (recoveries), net | $ 31,027 | $ (745,795)

X
- Definition Legal fees charged to expense during the period, related to unauthorized transactions + References No definition available. + Details
Name: | koss_GainContingencyLegalFees
Namespace Prefix: | koss_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds from former VP of Finance's assets forfeited included in income for the period, related to unauthorized transactions + References No definition available. + Details
Name: | koss_GainContingencyProceedsFromAssetForfeitures
Namespace Prefix: | koss_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents the total of net expenses related to recognition of unauthorized transactions in accounts during the reporting period from the previous years, for example, legal expenses recoveries denote recoveries from insurance claims. + References No definition available. + Details
Name: | koss_UnauthorizedTransactionRelatedCostsAndRecoveriesNet
Namespace Prefix: | koss_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Unauthorized Transactions, Costs and Related Recoveries, Net [Abstract] + References No definition available. + Details
Name: | koss_UnauthorizedTransactionsCostsandRelatedRecoveriesNetAbstract
Namespace Prefix: | koss_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration